ETH Price: $3,562.34 (-0.30%)
Gas: 21 Gwei

Contract

0xEd4064f376cB8d68F770FB1Ff088a3d0F3FF5c4d
 

Overview

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$0.00

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Value
Approve195008672024-03-24 0:31:475 days ago1711240307IN
0xEd4064f3...0F3FF5c4d
0 ETH0.0003385614.14294002
Approve194956492024-03-23 6:55:355 days ago1711176935IN
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0 ETH0.0004032116.84335612
Transfer194942602024-03-23 2:14:476 days ago1711160087IN
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0 ETH0.0008450118.2872849
Transfer194630472024-03-18 17:05:3510 days ago1710781535IN
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0 ETH0.0012474551.85206933
Transfer194630452024-03-18 17:05:1110 days ago1710781511IN
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0 ETH0.0023400750.64223699
Transfer194627662024-03-18 16:08:5910 days ago1710778139IN
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0 ETH0.001721337.26097312
Approve194069962024-03-10 20:11:1118 days ago1710101471IN
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0 ETH0.0028316961.64576401
Approve193877712024-03-08 3:29:1121 days ago1709868551IN
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0 ETH0.0011290247.16249022
Approve193614732024-03-04 11:23:2324 days ago1709551403IN
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0 ETH0.0015723165.68013584
Approve193588702024-03-04 2:39:3525 days ago1709519975IN
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0 ETH0.0024908454.22535162
Approve193490942024-03-02 17:52:1126 days ago1709401931IN
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0 ETH0.0023552850.95480737
Approve193285712024-02-28 21:00:3529 days ago1709154035IN
0xEd4064f3...0F3FF5c4d
0 ETH0.0027096858.62195936
Approve193285512024-02-28 20:56:3529 days ago1709153795IN
0xEd4064f3...0F3FF5c4d
0 ETH0.0023980351.87979158
Approve193285052024-02-28 20:47:2329 days ago1709153243IN
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0 ETH0.0023568951.00280412
Approve193282392024-02-28 19:54:1129 days ago1709150051IN
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0 ETH0.002291649.57724601
Approve192933822024-02-23 22:50:4734 days ago1708728647IN
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0 ETH0.0012772527.63250329
Approve192933332024-02-23 22:40:4734 days ago1708728047IN
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0 ETH0.0013400329.18777142
Approve192907062024-02-23 13:52:2334 days ago1708696343IN
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0 ETH0.0016369235.41368206
Approve192902082024-02-23 12:11:4734 days ago1708690307IN
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0 ETH0.0015393933.30371945
Approve192665392024-02-20 4:28:4738 days ago1708403327IN
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0 ETH0.0005619523.4861812
Approve192665272024-02-20 4:26:2338 days ago1708403183IN
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0 ETH0.0005556523.21117852
Approve192612622024-02-19 10:43:2338 days ago1708339403IN
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0 ETH0.0006319326.39751072
Approve192408632024-02-16 13:50:4741 days ago1708091447IN
0xEd4064f3...0F3FF5c4d
0 ETH0.0009646140.2945466
Transfer192128492024-02-12 15:30:3545 days ago1707751835IN
0xEd4064f3...0F3FF5c4d
0 ETH0.0015845534.30069225
Transfer191696202024-02-06 13:54:2351 days ago1707227663IN
0xEd4064f3...0F3FF5c4d
0 ETH0.0019701742.64817396
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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0x3b6831c0...C11bCE833
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
Vyper_contract

Compiler Version
vyper:0.3.0

Optimization Enabled:
N/A

Other Settings:
None license

Contract Source Code (Vyper language format)

# @version 0.3.0
"""
@title Curve LP Token
@author Curve.Fi
@notice Base implementation for an LP token provided for
        supplying liquidity to `StableSwap`
@dev Follows the ERC-20 token standard as defined at
     https://eips.ethereum.org/EIPS/eip-20
"""

from vyper.interfaces import ERC20

implements: ERC20

interface Curve:
    def owner() -> address: view


event Transfer:
    _from: indexed(address)
    _to: indexed(address)
    _value: uint256

event Approval:
    _owner: indexed(address)
    _spender: indexed(address)
    _value: uint256

event SetName:
    old_name: String[64]
    old_symbol: String[32]
    name: String[64]
    symbol: String[32]
    owner: address
    time: uint256


name: public(String[64])
symbol: public(String[32])

balanceOf: public(HashMap[address, uint256])
allowance: public(HashMap[address, HashMap[address, uint256]])
totalSupply: public(uint256)

minter: public(address)


@external
def __init__(_name: String[64], _symbol: String[32]):
    self.name = _name
    self.symbol = _symbol
    self.minter = msg.sender
    log Transfer(ZERO_ADDRESS, msg.sender, 0)


@view
@external
def decimals() -> uint256:
    """
    @notice Get the number of decimals for this token
    @dev Implemented as a view method to reduce gas costs
    @return uint256 decimal places
    """
    return 18


@external
def transfer(_to : address, _value : uint256) -> bool:
    """
    @dev Transfer token for a specified address
    @param _to The address to transfer to.
    @param _value The amount to be transferred.
    """
    # NOTE: vyper does not allow underflows
    #       so the following subtraction would revert on insufficient balance
    self.balanceOf[msg.sender] -= _value
    self.balanceOf[_to] += _value

    log Transfer(msg.sender, _to, _value)
    return True


@external
def transferFrom(_from : address, _to : address, _value : uint256) -> bool:
    """
     @dev Transfer tokens from one address to another.
     @param _from address The address which you want to send tokens from
     @param _to address The address which you want to transfer to
     @param _value uint256 the amount of tokens to be transferred
    """
    self.balanceOf[_from] -= _value
    self.balanceOf[_to] += _value

    _allowance: uint256 = self.allowance[_from][msg.sender]
    if _allowance != MAX_UINT256:
        self.allowance[_from][msg.sender] = _allowance - _value

    log Transfer(_from, _to, _value)
    return True


@external
def approve(_spender : address, _value : uint256) -> bool:
    """
    @notice Approve the passed address to transfer the specified amount of
            tokens on behalf of msg.sender
    @dev Beware that changing an allowance via this method brings the risk
         that someone may use both the old and new allowance by unfortunate
         transaction ordering. This may be mitigated with the use of
         {increaseAllowance} and {decreaseAllowance}.
         https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    @param _spender The address which will transfer the funds
    @param _value The amount of tokens that may be transferred
    @return bool success
    """
    self.allowance[msg.sender][_spender] = _value

    log Approval(msg.sender, _spender, _value)
    return True


@external
def increaseAllowance(_spender: address, _added_value: uint256) -> bool:
    """
    @notice Increase the allowance granted to `_spender` by the caller
    @dev This is alternative to {approve} that can be used as a mitigation for
         the potential race condition
    @param _spender The address which will transfer the funds
    @param _added_value The amount of to increase the allowance
    @return bool success
    """
    allowance: uint256 = self.allowance[msg.sender][_spender] + _added_value
    self.allowance[msg.sender][_spender] = allowance

    log Approval(msg.sender, _spender, allowance)
    return True


@external
def decreaseAllowance(_spender: address, _subtracted_value: uint256) -> bool:
    """
    @notice Decrease the allowance granted to `_spender` by the caller
    @dev This is alternative to {approve} that can be used as a mitigation for
         the potential race condition
    @param _spender The address which will transfer the funds
    @param _subtracted_value The amount of to decrease the allowance
    @return bool success
    """
    allowance: uint256 = self.allowance[msg.sender][_spender] - _subtracted_value
    self.allowance[msg.sender][_spender] = allowance

    log Approval(msg.sender, _spender, allowance)
    return True


@external
def mint(_to: address, _value: uint256) -> bool:
    """
    @dev Mint an amount of the token and assigns it to an account.
         This encapsulates the modification of balances such that the
         proper events are emitted.
    @param _to The account that will receive the created tokens.
    @param _value The amount that will be created.
    """
    assert msg.sender == self.minter

    self.totalSupply += _value
    self.balanceOf[_to] += _value

    log Transfer(ZERO_ADDRESS, _to, _value)
    return True


@external
def mint_relative(_to: address, frac: uint256) -> uint256:
    """
    @dev Increases supply by factor of (1 + frac/1e18) and mints it for _to
    """
    assert msg.sender == self.minter

    supply: uint256 = self.totalSupply
    d_supply: uint256 = supply * frac / 10**18
    if d_supply > 0:
        self.totalSupply = supply + d_supply
        self.balanceOf[_to] += d_supply
        log Transfer(ZERO_ADDRESS, _to, d_supply)

    return d_supply


@external
def burnFrom(_to: address, _value: uint256) -> bool:
    """
    @dev Burn an amount of the token from a given account.
    @param _to The account whose tokens will be burned.
    @param _value The amount that will be burned.
    """
    assert msg.sender == self.minter

    self.totalSupply -= _value
    self.balanceOf[_to] -= _value

    log Transfer(_to, ZERO_ADDRESS, _value)
    return True


@external
def set_minter(_minter: address):
    assert msg.sender == self.minter
    self.minter = _minter


@external
def set_name(_name: String[64], _symbol: String[32]):
    assert Curve(self.minter).owner() == msg.sender
    old_name: String[64] = self.name
    old_symbol: String[32] = self.symbol
    self.name = _name
    self.symbol = _symbol

    log SetName(old_name, old_symbol, _name, _symbol, msg.sender, block.timestamp)

Contract Security Audit

Contract ABI

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Deployed Bytecode

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